Evaluate the function f(x) = 2[[x]] + 7 for x = -7.
?
A. ? f(x) = -21
B. ? f(x) = 2
C. ? f(x) = -2
D. ? f(x) = -7
E. ? f(x) = 7
Answer: D
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Solve.Joel has started a business mowing lawns for the summer. The bar graph below tracks his net income for five weeks. 
Find the difference in Joel's net income between week 3 and week 4.
A. $137 B. $71 C. $127 D. $81
Solve the problem.If an earthquake has an intensity of x, then its magnitude, as computed by the Richter Scale, is given by src="https://sciemce.com/media/4/ppg__tttt0617191139__f1q94g5.jpg" alt="" style="vertical-align: -4.0px;" /> on the Richter scale, how many times more intense (to the nearest whole number) is the second earthquake than the first?
A. 2
B. 19,952,623,150
C. 1,258,925
D. 8031
is the intensity of a small, measurable earthquake. (Consider 
for this problem.) If one earthquake has a magnitude 
on the Richter scale and a second earthquake has a magnitude
Write the first four terms of the recursive sequence.a1 = -9, an = 
for n ? 2
A. -9, - 
, - 
, - 
B. -9, - 3, - 
, - 
C. -9, -9, - 
, - 
D. -9, -9, - 3, - 
Perform the indicated operation and simplify. Assume all variables represent positive real numbers.4
(2
- 3)
A. 8
- 12
B. 80
- 12
C. 8
- 3
D. 80
- 3