A chef preheats an oven. It starts at room temperature, 68°F, and heats up 23°F per minute. How long does it take for the oven temperature to reach 275°F? Please help me.

Question

asked Mar 7, 2024 164k views

1 Answer

Kennet Celeste · Answer 1 · 2024-03-14T05:40:01+0000

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Step-by-step explanation:

x = number of minutes

y = temperature

The equation is

y = 23x+68

The slope 23 tells us how fast the oven is heating up. The 68 is the y intercept, and it's the starting temperature (when x = 0).

We want to find the value of x when y = 275

y = 23x+68

275 = 23x+68

275-68 = 23x

207 = 23x

23x = 207

x = 207/23

x = 9

It takes 9 minutes for the oven to reach a temperature of 275°F

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Check:

y = 23x+68

y = 23*9+68

y = 207+68

y = 275

The answer is confirmed.