A survery found that 76% of bicycle riders do not wear helmets. There are approximately 38.7 million riders of all ages who do not wear helmets. Write a linear equation whose solution gives the total number of bicycle riders. Find this number of riders.

Question

A survery found that 76% of bicycle riders do not wear helmets.  There are approximately 38.7 million riders of all ages who do not wear helmets.  Write a linear equation whose solution gives the total number of bicycle riders.  Find this number of riders.

anonymous · Answer

please help me out guys!

anonymous · Answer

Let x be total number of riders.
Then number of riders who don't wear helmets =.76*x
So the required linear equation is .76x= 38.7 million

anonymous · Answer

76% of riders do not wear helmets. That corresponds to 38.7 million. In other words:$$76\%=38.7 million$$The question is asking you what is 100%.

anonymous · Answer

yes dalvoron so how do i find 100%?

anonymous · Answer

Let total riders =x
A function that computes 76% of x is given by f(x)=0.76x

We must find the x-value for which f(x)=38.7

so solve the equation 0.76x = 38.7

x=50.92 

so total riders = x = 50.92 millions

anonymous · Answer

YOU ARE AWESOME!!! thank you so much shanna!!