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90+63t-7t^{2}
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90+63t-7t^{2}
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9t-7t^{2}+54t+90
Use the distributive property to multiply 18 by 3t+5.
63t-7t^{2}+90
Combine 9t and 54t to get 63t.
9t-7t^{2}+54t+90
Use the distributive property to multiply 18 by 3t+5.
63t-7t^{2}+90
Combine 9t and 54t to get 63t.
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