Answer:
a=7.9
Step-by-step explanation:
2.25(a+1.3)=20.7 *Distribute (multiply) the 2.25 throughout the parenthesis
2.25a+2.925=20.7 *Subtract 2.925 from both sides
2.25a=17.775 *DIvide by 2.25
a=7.9
The answer is 12 which is a dozen
.............................
Answer:
about 31 percent
Step-by-step explanation:
So domain is the number you can use
range is the output your get from inputting the domain given
so from 2≤x≤5
since it is linear, we can be sure that we only need to test the endpoints of the domain to find the endpoints of the range
sub 2 for x
y=2(2)+1
y=4+1
y=5
sub 5 for x
y=2(5)+1
y=10+1
y=11
so range is from 5 to 11
in interval notation: [5,11]
in other notation 5≤y≤11
or
R={y|5≤y≤11}
