Prove that:
7^16+7^14 is divisible by 50.

One trick you could do is factor out the GCF 7^14 and note how 50 is one of the factors left over

7^16 + 7^14 = 7^14(7^2 + 1)

7^16 + 7^14 = 7^14(49 + 1)

7^16 + 7^14 = 7^14*50

Since 50 is a factor of the original numeric expression, this means the original expression is divisible by 50.

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step-by-step explanation:

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart