:
What is an expression for the sale price of a bracelet that has been discounted 60% from its sticker price? Evaluate the expression for sticker prices of $90.
Use the variable s for the sale price and p for the sticker price.
(1 point)
s = p – 0.6p; $36
s = p – 0.4p; $54
s = p + 60p; $5,490
s = p + 0.6p; $90
4. Is x = 1 a solution of the equation 2 – 8x = –6? (1 point)
yes
no
A souvenir maker wants to create a scale model of the Empire State Building. The Empire State Building is 1,472 feet tall and has a base with dimensions 286 feet by 286 feet. If the model is 6 inces tall, approximately what are the dimensions of its base in inches? (1 point)
1.2 inches by 1.2 inches
1 inches by 1 inches
0.2 inches by 0.2 inches
2.3 inches by 2.3 inches
6. Is (3, 13) a solution of the equation y = 4x? (1 point)
yes
no
7. Which ordered pair is a solution of the equation y = – 9x + 4? (1 point)
(10, –86)
(–4, –58)
(6, –41)
(–6, 57)
8. Bob and his best friend Bill have the same birthday, but Bob is 3 years older than Bill. Let the variable x represent Bob’s age and y represent Bill’s age. Which equation describes the relationship between Bill’s age and Bob’s age? (1 point)
y = x/3
y = x + 3
x = y + 3
y = 3x
14. Which number is a solution of the inequality?10.6 < b (1 point)
–18
–9
7
14
15. How do you write the set in roster form? In set builder notation?
D is the set of whole numbers less than 3. (1 point)
D = {0,1,2,3,4,5}; D = {x is a whole number, x < 3}
D = {0,1}; D = {x  x < 3}
D = {0,1,2}; D = {x  x is a whole number, x < 3}
D = {0,1,2,3,4,5,6,7}; D = {x < 3}
23. The ordered pairs (1, 1), (2, 4), (3, 9), (4, 16), and (5, 25) represent a function. What is a rule that represents this function? (1 point)
y = x²
y = 2X
y = x + 2
y = 2x
24. The ordered pairs (1, 81), (2, 100), (3, 121), (4, 144), and (5, 169) represent a function. What is a rule that represents this function? (1 point)
y = x8
y = 8x
y = (x + 8)²
y = 8x
26. The function represents the number of jumping jacks j(x) you can do in x minutes. How many jumping jacks can you do in 5 minutes? (1 point)
195 jumping jacks
7 jumping jacks
144 jumping jacks
234 jumping jacks
27. Suppose your business has a special checking account used just for paying the phone bill. The balance is $740.00 this month. Next month the balance will be $707.60, after that it will be $675.20, and on the third month the balance will be $642.80. Write a rule to represent the balance in the account as an arithmetic sequence. How many months can you pay your phone bill without depositing any more money in the account? (1 point)
A(n) = 740.00 – 32.40n; 22 months
A(n) = 740.00 + (n – 1)(–32.40); 23 months
A(n) = 740.00 – 32.40 n ; 23 months
A ( n ) = 740.00 + ( n – 1)(–32.40); 24 months
30. In the following situations, is there likely to be a correlation? If so, does the correlation reflect a causal relationship? Explain.
the average daily winter temperature and your heating bill
(1 point)
There is a positive correlation. The higher the average daily winter temperature the higher your heating bill.
There is a negative correlation and a causal correlation. The higher the average daily winter temperature the lower your heating bill.
There is no correlation.
How many solutions does the system have?
31. x = –4y + 4
2x + 8y =8 (1 point)
one solution
two solution
infinitely many solutions
no solution
32. y = 6x+ 2
3y – 18x = 12 (1 point)
one solution
two solution
infinitely many solutions
no solution
