A phone company offers two monthly plans, Plan A costs $21 plus an additional S0.10 for each minute of calls. Plan B costs $16 plus an additional $0.14 for each minute of calls
for
what amount of calling do the two plans cost the same

What is the cost when the two plans cost the same>

How many zeros does the function f(x)=4x3-x2+1 have

Me with this one question, and i'll upvote the brainliest answer

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling