Celina can walk 4 miles in 1 hour and can run 8 miles in 1 hour. what percent of celina’s average running speed is her average walking speed? a. 25% b. 50% c. 75% d. 100%

The long jump record, in feet, at a particular school can be modeled by f(x) = 19.6 + 2.5ln(x + 1) where x is the number of years since records began to be kept at the school. what is the record for the long jump 11 years after record started being kept? round your answer to the nearest tenth.

In δabc, if the length of side b is 3 centimeters and the measures of ∠b and ∠c are 45° and 60°, respectively, what is the length of side c to two decimal places?

Which of the following expressions is equal to 2x^2+8