*Select all of the possible types of numbers* that are appropriate input values for the given situation. A flower-delivery service charges $39.95 per flower arrangement and $2.99 for delivery. The total cost y is represented by the function y = 39.95x + 2.99, where x is the number of flower arrangements.

A. whole numbers
B. integers
C. rational numbers
D. positive integers
E. negative numbers
F. only zero

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

in 1995, potato plants were taken into space aboard the space shuttle columbia.

step-by-step explanation:

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.

whats the rest of it?