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
Answer: D
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Express in scientific notation.0.000000011602
A. 1.1602 × 10-8 B. 1.1602 × 10-7 C. 1.1602 × 108 D. 1.1602 × 10-9
Use the fundamental identities and simplify the expression to get a numerical value.sin2 x + sin2 x cot2 x
A. sin2 x + 1 B. cot2 x - 1 C. cot2 x + 1 D. 1
Use the graph of f to determine the intervals where f is increasing and where f is decreasing.
A. increasing: [2, ?); decreasing: (-?, 2] B. increasing: (-?, 1] ? [2, ?); decreasing: [1, 2] C. increasing: [0, 3]; decreasing: (-?, 0] ? [3, ?) D. increasing: [0, ?); decreasing: (-?, 0]
Solve the problem by estimating.Juan travelled for 6 weeks in South America last year and spent $3179 while he was there. Estimate the average amount he spent each day. Round the number of days to the to the nearest ten and the amount of money spent to the nearest hundred.
A. $70 B. $700 C. $80 D. $800