Help plz asap? : 1. Write an expression for each of the following:
a. the sum of 9 and z
b. the difference between 22 and x
c. 8 less than the quotient of x divided by 7
d. x increased by 10 divided by 4

Astudent survey asked: "how tall are you (in inches)? " here's the data: 67, 72, 73, 60, 65, 86, 72, 69, 74 give the five number summary. a. median: 73, mean: 70.89, iqr: 5, min: 60, max: 74 b. 60, 66, 72, 73.5, 86 c. 60, 67, 72, 73, 74 d. 0, 60, 70, 89, 74, 100

If a is a nonzero real number then the reciprocal of a is

Calculate the average rate of change over the interval [1, 3] for the following function. f(x)=4(5)^x a. -260 b. 260 c. 240 d. -240