Jason solved the following equation to find the value for x. –8.5x – 3.5x = –78

x = 6.5

Describe how Jason can check his answer.

Sample

Step-by-step explanation: (My answer)

1) Subtract 8.5 and 3.5, that equals 12.

2) Multiply 78 and 12, that equals 6.5 .

3) Check your answer.

Once you've done that, the answer you should get is 78.

78 is equal to 78, that is your final answer and it is correct.

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94