First, use front end rounding to estimate each answer. Then find the exact answer.The school was trying to raise $1000 for the project. If $313 had been collected, how much more needed to be raised?
A. estimate: $1000 - $300 = $700; exact: $687
B. estimate: $1000 - $310 = $710; exact: $687
C. estimate: $1000 - $310 = $690; exact: $687
D. estimate: $1000 - $400 = $600; exact: $687
Answer: A
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At one high school, students can run the 100-yard dash in an average of 15.2 seconds with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are:Between 16.1 and 17 seconds
A. 12% B. 13.5% C. 27% D. 34%
Translate the question into an equation. Do not solve.Find 95% of 30% of 6600.
A. n = 95 × 30 × 6600 B. 6600 = 95% × 30% × n C. 6600 = 95 × 30 × n D. n = 95% × 30% × 6600
Decide whether or not the correct factored form of the polynomial is given.20z2 - 7z - 6(4z - 3)(5z + 2)
A. No B. Yes
Solve the equation.5x = 
A. {-3}
B. 
C. {3}
D. 