Find (3 × 10 ^4) + (7 × 10 ^2).
a) 3.07 × 10 ^2
b) 3.07 × 10 ^4
c) 3.70 × 10 ^2
d) 3.70 × 10 ^4

Hannah is 3 years older than twice her brother joey’s age. joey is 2 years old. how old is hannah? show all of your work! the number of students is five more than seven times the number of teachers. there are 10 teachers. how many students are there? be sure to show all of your work!

Which is a graph of a proportional relationship?

George has seven boxes of five pencils. giulio three boxes of eight pencils. one of the boys arranges all his pencils equally into two groups. was this george or giulio how many are in each group explain