Answer:
Step-by-step explanation:
B) 5
I believe it is $64.28
First you divide 45/7 to find out what 10% of 45 is since 70% is $45
45/7= 6.42, so now you multiply 6.42 by 3 to fin out what the 30% is
6.42(3)= $19.28
Now you add $19.28+45 to add the 30% and the 70%, which is $64.28
$1.20 3($1.20)
-------- * (3/4 lb) = ------------ = $0.90 (cost of 3/4 lb of apples)
1 lb 4 lb
Answer:
2(r+4)(r-4)
Step-by-step explanation
First, you want to factor out 2 from both terms, which gives you 2(r^2-16). Then you want to recognize that (r^2-16) is factorable into 2 terms. If you multiply (r+4) by (r-4) then you are given (r^2-16) as a result.
13 x 1.75 = 22.75
take 22.75 and multiply by 2
you should get 45.50
