For every 40 phone calls that jess made in a month, she received 70 phone calls. what is the ratio in simplest form of the number of phone calls made to the number of phone calls received by jess that month?

a 3: 4
b 4: 3
c 7: 4
d 4: 7

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )