She can use 68 + 20 = 88 to help by noticing that the 20 is ahead of 19 by 1. She can easily mentally turn the 20 into a 19 and realized that the 88 would become 87.
The answer is -4.3!!!!!!!
Answer:
the anser is 4 im pretty sure.
Step-by-step explanation: 3*6 is 18 and 4*4 is 16. 18 minus 16 is 2 multiplied by the other 2 is 4.
Answer:
C ) exponential : y = 100 * 0.79^x
Step-by-step explanation:
