Shawn and Mark want to save $225.00 . Shawn has $16.00 and saves $10.00 a week . Mark has $22.00 and saves $7.00 each week . Which equation can be used to find the number of week it will take them ? A. 26x - 29x = 225 B. 38x + 17 = 225
C. 55x = 225
D. 38 + 17x = 225

D

Step-by-step explanation:

Shawn

Let the number of weeks = w

The beginning amount = 16 dollars

The amount per week is 10 dollars

The number of weeks is 10x

Equation

Savings = 16 + 10x

Mark

Let the number of weeks = w

The beginning amount = 22 dollars

The amount per week is 7 dollars

The number of weeks is 7x

Equation

savings = 22 + 7x

But they are working together so their separate equations must be added.

Total Savings= 16 + 10x + 22 + 7x = 38 + 17x

17x + 38 = 225

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

3x + 4y -25 =0 represents the amount of change sianna should recieve