Adinah and her friend planted a maple tree. The expression 3.1a + 5.2 can be used to find the height of the tree, in feet, after a years. How tall is the tree when a = 9

33.1

Step-by-step explanation:

The tree would be 33.1 feet in 9 years.

the problem i put in my calculator is 3.1 * 9 + 5.2 , this is because if there is no sign indicating to add, subtract ect. you will multiply

step-by-step explanation:

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c