Use a Graphing Calculator to Solve the System of Equations $$\begin{array}{l}1.5 x-0.4 y+1.6 z=2.4 \\4.5 x-7.0 y-0.4 z=-4.0 \\3.8 x+2.4 y+2.0 z=8.6\end{array}$$

question 55

Multiple Choice

Use a graphing calculator to solve the system of equations. Round your solution to one decimal place. $$\begin{array}{l}1.5 x-0.4 y+1.6 z=2.4 \\4.5 x-7.0 y-0.4 z=-4.0 \\3.8 x+2.4 y+2.0 z=8.6\end{array}$$

• A) \( (0.8,0.9,0.6) \)
• B) \( (1.1,1.2,0.8) \)
• C) \( (0.5,0.6,0.4) \)
• D) \( (0.3,0.3,0.2) \)

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Definitions:

Pregnancy Length

The duration of pregnancy, typically measured from the first day of the last menstrual period to birth, approximately 40 weeks.

Fetal Heart Tones

The sounds or heart rate of a fetus as heard through devices like a Doppler during pregnancy check-ups, important for assessing fetal well-being.

Beats Per Minute

A unit of measure used to quantify the tempo of music, the frequency of heartbeats, or other periodic activity within a minute.

Uterine Souffle

A whooshing sound heard through auscultation over the pregnant uterus, caused by blood flowing through the uterine arteries.