Mathematics, 28.07.2019 20:20 sonyfan

Izzie recently took a math test where each correct answer (a) was worth 7.8 points. she also correctly answered a bonus question worth 15 points. using the equation 7.8a + 15 = 77.4, how many questions on the test did izzie answer correctly? a) 5 b) 8 c) 12 d) 9!

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