I need help
McKenna was asked to write the following expression in standard form.

3−5(3a+6)
When writing the expression in standard form, McKenna made a mistake.
3−5(3a+6)3+(−5)(3a+6)−2(3a+6)−6a+(− 12)−6a−12 Step 1 Step 2 Step 3 Step 4
a. McKenna made her first mistake in
.
b. The correct expression in standard form is
.

McKenna made her first mistake in step 3 this because she summed 3 with (-5), she should have multiplied (3a+6) by (-5).

The correct expression in standard form is :

-15a-32.

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

happy to

pls mark as brainliest