solving simple Equations
x − 3 = −5
x=-2
A swimmer wins the 50-yard freestyle with a time of 24.76 seconds. Find the swimmer’s average speed to the nearest hundredth of a yard per second.
2.02 yards per second.
2.5x − 13 = 2.
x=6
2m − 3 = 13
m=8
0.9 = y + 2.8
y=-1.9
The temperature at 5 p.m. is 20°F. The temperature at 10 p.m. is −5°F. How many degrees did the temperature fall?
25°F
−12 = 9x − 6x + 15.
x=-9
−21a + 28a − 6 = −10.2
-0.6
w + 3 = −4
w=-7
The balance of an investment account is $308.32 greater than the balance 4 years ago. The current balance is $4708.57. What was the balance 4 years ago?
4400.25
2(1 − x) + 3 = − 8.
x=6.5
x/6=10/12
x=5
1.7 = 3.1 + c
c=1.4
You spend $8.64 on 12 cans of cat food. Each can costs the same amount and is on sale for 80% of the original price. The following week, the cans are no longer on sale. You have $10. Can you buy 12 more cans? Explain your reasoning.
3 ft by 6 ft.
p + 0.07p + 425 = 10,195
p ≈ 9130.84
−14 = p − 11
p=-3
You spend $8.64 on 12 cans of cat food. Each can costs the same amount and is on sale for 80% of the original price. The following week, the cans are no longer on sale. You have $10. Can you buy 12 more cans? Explain your reasoning.
no,you cannot you would need $10.80
p + 0.06p + 420 = 9995
p ≈ 9033.02