Is 3x a variable or constant

A variable.

Step-by-step explanation:

In 3x, 3 is constant and x is a variable but together, 3x is a variable.

variable

Step-by-step explanation:

In 9y, 9 is a constant and a is y variable.

In -7ht, -7 is a constant and h and t are variables.

In 3x, 3 is constant and x is variable but together 3x is a variable.

idk

step-by-step explanation:

75

step-by-step explanation:

you do x-29=46 (the number of cantaloupes sold)

in order to find x, you have to find what minus 29 equals 46, meaning you'd have to add 29 to 46.

29+46=75

if you replace x with 75, the equation looks like:

75-29=46

x=75