Write in expanded form.-5x4
A. -5x
B. -5(x + x + x + x)
C. -5x ? x ? x ? x
D. -5 + x + x + x + x
Answer: C
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First, use front end rounding to estimate each answer. Then find the exact answer.Light travels 186,000 miles per second. How many miles does it travel in 
A. estimate: 190,000 ? 800 = 152,000,000 miles; exact: 147,126,000 miles B. estimate: 190,000 ? 790 = 150,100,000 miles; exact: 147,126,000 miles C. estimate: 200,000 ? 790 = 158,000,000 miles; exact: 147,126,000 miles D. estimate: 200,000 ? 800 = 160,000,000 miles; exact: 147,126,000 miles
Simplify the exponential expression.
A. -12,500
B. 5
C. 
D. 
Raise the number to the indicated power and express in trigonometric notation.
5
A. 32
B. 32
C. 2
D. 2
Translate the English sentence into an equation using the variables indicated.The attendance at the theater on Friday night was greater than the attendance on Saturday night. The difference in the attendance between the two nights was 716 people. Use f for the number of people at the theater on Friday and s for the number of people at the theater on Saturday.
A. s - f = 716
B. f + s = 716
C. 
= 716
D. f - s = 716