I’m supposed to write exactly what i entered in the calculator but i honk the exponent is what’s wrong, i just don’t understand how, can someone explain?

Step-by-step explanation:

after y put value it will be this:

-(-4)+7×3+(-4)^2

solution:

4+21+16

41

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this