Question

a group of college students developed a solar - powered car and entered it in a race. the car travels at a constant speed of 100 meters per 4 seconds. which variable stands for time in the expression $d = 25t$?

• wheels
• miles
• seconds
• distance

Explanation:

The formula $d = 25t$ follows the standard distance-speed-time relationship, where $d$ represents distance, the coefficient 25 is the speed (calculated as $\frac{100}{4}=25$ meters per second), and $t$ represents time. Among the options, "Seconds" is the unit/representation for time here, while the other options do not match the time variable.

Answer:

○ Seconds