The expression 3t + 15 can be used to approximate the height, in inches, of a tree t years after it was planted. What is the height of the tree 8 years after it was planted?

144

Step-by-step explanation:

3+15=18

18 multiply 8=144 is the height after 8 years

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

answer: b

step-by-step explanation: