Step-by-step explanation:
4 times = 4x increased by 7 = 4x+7

The first one is similar to the triangle
Answer:
13 x 9 x 5
Step-by-step explanation:
because there is 13 steps in one flight and there fore we need to multiply 13 x 9
then we have to multiply the product by 5 because it is asked how many steps does she climb in five days
Answer:
V=lwh
/3
Step-by-step explanation: