1. A parent raises a child\'s allowance by 15% each year. Ifthe allowance is $3
ID: 3089858 • Letter: 1
Question
1. A parent raises a child's allowance by 15% each year. Ifthe allowance is $3 now, when will it reach $15? 2. A scientist notes the bacteria count in a petrie dish is50. Two hours later, he notes the count has increased to 80. Ifthis rate of growth continues how much time will it take for thebacteria count to reach 100? 3. The electric current I in amperes of a circuit is given bythe formula log2I = -t. Find the current when t is3x. 4. The voltage input of an amplifier is 0.5 volts. Its voltageoutput is 52 volts. Use the formula d=10logE0/E1 where d is the decibel voltage,E0 is the output voltage, and E1 is the inputvoltage to find the decibel voltage. 1. A parent raises a child's allowance by 15% each year. Ifthe allowance is $3 now, when will it reach $15? 2. A scientist notes the bacteria count in a petrie dish is50. Two hours later, he notes the count has increased to 80. Ifthis rate of growth continues how much time will it take for thebacteria count to reach 100? 3. The electric current I in amperes of a circuit is given bythe formula log2I = -t. Find the current when t is3x. 4. The voltage input of an amplifier is 0.5 volts. Its voltageoutput is 52 volts. Use the formula d=10logE0/E1 where d is the decibel voltage,E0 is the output voltage, and E1 is the inputvoltage to find the decibel voltage.Explanation / Answer
the answer to the first question regarding the allowance is about 12 years. keep finding 15% and adding it to the previous year.
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