Answer:
<em>1)</em> C. 7
<em>2a)</em><em> </em>$10.66
<em>2b)</em><em> </em>plot each price and amount at the correct spot
<em>3a)</em><em> </em>0.24
<em>3b)</em><em> </em>%24
Step-by-step explanation:
<em>1)</em> cross multiply the equation: 5*28 =140 and m*20=20m
tun the answers back into an equation: 20m=140
divide both sides by 20: <u><em>m=7</em></u>
<em>2a)</em><em> </em>divide 3 by 2.25: 3/2.25=$1.33(repeating)
divide 4 by 3: 4/3.00=$1.33(repeating)
divide 6 by 4.5=$1.33(repeating)
(because now you know that 1 box of Mac N' Cheese is $1.33) multiply 8 by 1.33(repeating):8*1.33(repeating)=<u><em>$10.66</em></u>
<em>3a)</em> divide 6 by 25: 6/25= <em><u>0.24</u></em>
<em>3b) </em>multiply 0.24 by 100: 0.24*100= <em><u>%24</u></em>