An ice cream sundae costs $1.75 plus an additional $0.35 for each topping. If the total cost is $2.80, how many toppings did the sundae have?

t = number of toppings the sundae has

1.75 + 0.35t = 2.8 {sundae, plus 0.35 times toppings, equals total cost}

-1.75 -1.75

0.35t = 1.05 {subtracted 1.75 from each side}

t = 3 {divided each side by 0.35}

1.75 + 0.35t = 2.8 {sundae, plus 0.35 times toppings, equals total cost}

-1.75 -1.75

0.35t = 1.05 {subtracted 1.75 from each side}

t = 3 {divided each side by 0.35}

**the sundae has 3 toppings***- Algebra House*