When Sanchez left his house this morning, his cell phone was 30% charged and it then started to lose 3% charge for each hour the
reafter. Write an equation for the function B(t), representing the charge remaining in Sanchez's battery, as a percentage, t hours after he left his house.
The equation that represents the battery charge in Sanchez's phone as a percentage t hours after he left his house is B(t) = 30 - 3*t.
Step-by-step explanation:
The initial state of the battery on Sanchez's phone is 30% so in time t equals zero the battery should be at that value and as time progresses the battery should lose battery charge at a rate of 3% for each hour. We can write this in an equation form by taking the initial state and subtract it by the rate multiplied by the value of time. We have:
B(t) = 30 - 3*t
The equation that represents the battery charge in Sanchez's phone as a percentage t hours after he left his house is B(t) = 30 - 3*t.
Deandre = x Kala = x + 6 Eric = 3(x+6) x + x + 6 + 3(x+6) = 119 2x + 6 + 3x + 18 = 119 5x + 24 = 119 5x = 95, x = 19 Deandre has $19 Kala has 19 + 6 = $25 Eric has 3(25) = $75
