Marva needs at least $130 to buy a new dress. She has already saved
$58. She earns $8 an hour
tutoring. Write and solve an
inequality to find how many hours
she will need to tutor to buy the
dress.

9 hours

Step-by-step explanation:1

130 = 58 + 8h

-58   -58

72 = 8h

÷8   ÷8

9 = h

9 hours

Question Asked: What type of number gets a math mathermatician in trouble the most when trying to use a function to model a real world situation?​

All numbers are imaginary. Introducing the square root(s) of minus one is convenient because all n-degree polynomials with real coefficients then have n roots, making algebra "complete"; it saves using matrix representations for objects that square to -1 (such objects representing an important part of the structure of linear equations which appear in quantum mechanics, heat diffusion, optics, etc). The hottest contenders for numbers without purpose are probably the p-adic numbers (an extension of the rationals), and perhaps the expiry dates on army ration packs.