Answer:
Betty will get 85 grade.
Step-by-step explanation:
Betty scored 75,90,88,72, and 86 on her tests.
As given the teacher throws out the lowest grade, we will not consider 72.
Now the teacher averages the remaining grades, and round up to the nearest integer.
So, taking the average we get;
= 84.75
Rounding this to nearest integer, we get 85.
Hence, Betty will get 85 grade.
we are given
airthematic sequence
we can use nth term formula
n is number of terms
an is nth term
d is common difference
a1 is first term
We are given
a7=40
we can use it
a18 = 106
we can subtract both equations
now, we can find a1
we can plug d=6
12th term:
now, we can plug values
so, 12th term is 70...........Answer
Answer:
5 months
Step-by-step explanation:
Given
Required [Missing from the question]
At what month will the cost be equal
To do this, we equate both expressions
This gives:
Collect like terms
Solve for m
Answer:
$46.272
Step-by-step explanation:
