I need help plssssss

19

Step-by-step explanation:

First, insert the numbers at the variables, so 7-3(-4).  So, because of PEMDAS, you multiply first, so 3(-4)=-12. 7-(-12)=19.

(hope this helps!!)

Hi there!

The formula we use to find the area of a rectangle is length * width.

So, in order to find the area, we should convert all lengths to the same unit and multiply.

100 cm = 1 m
690 cm = 6.9 m

6.9 m × 13 m = 89.7 sq. m

So, the answer is 89.7 square meters.

Hope this helps!