You need to know the value of X to determine whether or not the equation is true.
1.9 times 13 =24.7
The total mass of 13 jars of sugar is 24.7 kg
36 muffins at $2 a piece would be $72
4 cakes at $8 a piece would be $32
$32+$72= $104
Jonah made $104 from the bake sale
