Answer the following questions for the functionf(x) = x \sqrt{x^2 + 25}defined on the interval [ -7, 5 ] .a. f(x) is concave down on the interval tob. f(x) is concave up on the interval toc. the inflection point for this function is at x=d. the minimum for this function occurs at x=e. the maximum for this function occurs at x =

Katlyn made 4 dresses with 7 yards of fabric. how many yards did she use on 1 dress?

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

Acircus act has 3 times as many elephants as acrobats. jorge noticed that all together there were 56 legs in the circus ring. how many elephants were in the show?