12. An art teacher enlarged the area of a copy

of a painting by 49%. Let d represent the

area of the original painting. The expression

d+ 0.49d is one way to represent the area

of the new painting. Write two additional

expressions that will give the area of the new

painting.

1.

2.

Step-by-step explanation:

One equation is already given in the statement which can give the result.

Lets assume the area of painting = d = 10 sq inch

Now following expressions will give the same answer.

1.

2. Multiplying the percentage d, As the area increases by 49 % which means that D is multiplied by increased amount of 49%

equation will be

3. Calculating the percentage increment = 1/1.49=0.67

Now dividing this value with d will give the same area.

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5

probably the last option

step-by-step explanation: